A component of Coloring the Gem City will be the mapping of the demographics of Dayton from 1940-2010, based on 70 years of decennial census summaries. These maps will serve as primary research tools to guide further investigation.

Here are the maps for 2000 and 2010.

Density Dot Map of Census Data for Household by Race, U.S. Census 2000-2010

(Version 1, August 31, 2015)

This slideshow requires JavaScript.

1 pink dot= 1 member of a black household

1 greenish-blue dot= 1 member of a white household

1 bright green dot= 1 member of a mixed race household

1 red dot= 1 member of an asian household

1 brown dot= 1 member of a household which listed other/native american under racial category on census


These maps are to be overlaid with oral histories connected to the project, as well as fitted with a timeline of the major events in the segregation of the Dayton Metro Area. The oral history map is to be launched in April, 2016.
Oral histories are archived with Oral History in the Liberal Arts (a Great Lakes Colleges Association Expanding Collaboration Initiative), and are presented with the Oral History Metadata Synchronizer Viewer. Oral histories are to be timelined and overlaid on a GIS-enabled racial demographic map detailing the effects of segregation in the Dayton metro area which displays census data for population dynamics by race throughout the 20th century.


US Census Summary Files, Block-level data for Montgomery Co., OH

American Fact Finder



Census block-level data was merged with block-level shapefiles for Montgomery Co. to produce a demographic density dot map. Each block has an even distribution of dots. The dots are not linked to specific geolocations. Please contact me if you have any questions, suggestions, or concerns.

Software: ArcGIS, ArcMap, Microsoft Excel

Model adapted from that of the Racial Dot Map, produced by The Weldon Cooper Center for Public Service at University of Virginia.

Please attribute accordingly when sharing images.